Sealing attachment for pumps.



W. G. PRITOHARD.

SEALING ATTACHMENT FOR PUMPS.

APPLICATION FILED FEB.1'3, 1911.

Patented July I5, 1913.

WITNESSES 20 $57 QZJZW/W.

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"entrain sraree rarauir rric WILLIAM C. PRITCHARID, OF LANCASTER,PENNSYLVANIA, ASSIGNOR T NATIONAL STORE SPECIALTY COMPANY, OF LANCASTER,PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SEALING ATTACHMENT FOR PUMPS.

inevera.

Specification of Letters Patent.

Patented July 15, 1913.

To all whom it may concern Be it known that I, VVILLIAM G. Pnrrci-r-Am), a citizen of the United States, residing at Lancaster, in thecounty of Lancaster and State of Pennsylvania, have invented certain newand useful Improvements in Sealing Attachments for Pumps, of which thefollowing is a specification, reference being had therein to theaccompanying 0 drawing.

1 This invention relates to measuring pumps of that class which areemployed in connection with the dispensing of liquids,

such as oil and gasolene, in various quantities which have beenpredetermined. i The objects of the invention are to provide s"; sealingor measuring device that shall be simple, cheap, and that will so limitthe stroke of the pump piston as to accurately measure certainpredetermined quantities.

Another object of the invention is to provide a device of this classthat may be used with the usual styles of dispensing pumps whereby themeasure of the various quan tities of liquid may be sealed or locked toprevent variations, and yet may be adjusted to correct any inaccuraciescaused by wear, etc.

Still another object is, in a sealing or locking device of this class,to provide a novelinechanism that will assure the delivery of any one ofthe predetermined quantities, and be at all times under the control ofthe operator.

With these and other objects in view, my invention consists in certainconstruction and combination of parts as will hereinafter be fullydescribed and claimed, and illustrated in the accompanying drawings,which form a part of this application, and in which like figures ofreference refer to corresponding parts in all of the views; but it isfully understood that while I have here described my invention as shown,that I do not confine myself to the exact design as shown, as

slight changes may be made in the construction and arrangement of theseveral parts without departing from the spirit of the j invention. 5 Inthe drawings :Figure 1, is a perspecr tive view of a pump embodying myinvention. Fig. 2, is a detail elevation of a dis pensing pump with mydevice attached thereto, showing the arrangement of the several parts.Fig. 3, is a detail view partly in section, taken on the line XI) ofFig. 2.

Referring to the drawings, the usual dispensing pump is shown whichcomprises the discharge pipe 1, the standard 2, and the gear box orframe 3, secured thereto. lVithin the gear case or frame 3, is mountedthe reciprocating rack-bar l, which is attached to the upper end of thepiston rod 5, which operates the usual pump piston in the tank (notshown). For reciprocating the rack-bar 4, there is mounted in the gearcase 3, a pinion G, in mesh with said rackbar 4:, and rotated by ahand-crank 7.

At a suitable point adjacent to the discharge pipe 1, and the piston rod5, is rotatably mounted an upright 8, having its upper end j ournaled inthe adjustable bearing bracket 9, attached to the discharge pipe 1, andits lower end journaled in a bearing 10, formed in the base plate 11.Said upright S, is provided with a number of radial arms 12, and 13,which are provided with the adjustable stop pins 11-1, and 15, that arescrew-threaded therein, and which are provided with the lock nuts 16,and 17. The arms 12, and 13, with their stop pins 14, and 15, areadapted to be moved into a position to intercept and limit the upward ordischarge strokes of the pisstonrod 5, at predetermined points, by anoperating handle 18, which is attached to the lower end of said upright8; said stop pins 14, and 15, engaging a projection 19, formed on saidrack-bar 4.

To easily, rapidly and accurately position the stop pins 14L, and 15,where either one or the other will intercept the projection 19, andlimit the upward movement of the piston-rod, thus controlling thequantity of liquid discharged; said stops being positioned out ofalinement with each other, a sector-plate 20, is secured to the baseplate 11, by the stop pins 26, which limit the swing of said operatinghandle 18, over the sector-plate 20. Said sector-plate 20, is providedwith graduat-ions or indicating marks which correspond to the stops andindicate the predetermined quantities of liquid discharged within thecapacity of one full stroke of the pump piston. As indicated, the stopsand sector-plate may be arranged to limit and indicate any predeterminedquantity of liquid within the limits of the rod 5, is further providedwith a projection 22, which isadaptedto engage an adjustable stop 23,mounted in the gear case, and locked therein byr the-s'et-scre w 24."1'0 further complete the device, a computing chart,

scale or tabulated quantity indicating desaid stop, and is then reversedto discharge the liquid into a receptacle of standard capacity,corresponding to .the, stop em ployed; and if thediquid overflows ordoes not fill the standard receptacle, the stop is adj usted until therequired amount'of liquid is delivered, andthis operation is repeatedfor each stop until all have been sealed. Having thus described myinvention what I claim as new and desire to secure by Letters Patent isIn a device of the character described, the combination with a pumppiston rod and a discharge pipe, a bearing fadjustably \V 15 vice 25, isprovided, which may be so armounted upon said "discharge pipe, a secranged as to indicate. the prices per stated tor plate formed withindicating devices quantity, and in connection therewith is and mountedadjacent the discharge pipe, a shown an automatic recorder 27, Which isbase plate having a bearing formed thereonf operated by the upwardstrokeofthe pisa rotatable upright .member detachably Z ton-rod, and isadapted to record the quan mounted in said bearings, at stopcarried bytity of liquid discharged by said pump the piston rod, radial armsprojecting'from during a single sale, said recorder, forming the uprightmember at relatively. difiterent the subject" of my application forLetters angles, whereby only one arm will be dis- 1 Patent filedFebruarY 13, 1911, Serial No. posedbeneath' the stop at the same timefl 25608,2Q7} w c a st ops vcarr'ied by the radial arms for en- The operationof'the device is as [followsi gagen ent with-the stop carried by thepis- @[Iofset and seal the adjustable stops,-i so "ton*rod, and anindicator arni' carried by that they will control and 'prede'termi'nethe upright member. the quantities of liquid to: be delivered by Intestimony whereof I aflix my signature 30 the pump according to"standard lmeasure inpresenceof two witnesses. merits, the operatinghandlei's first moved 'lVILLIAM C; PRITCI-IARD.

' tobring'one Oft-liecStOpS into thefpathflof .lVitnesses-z' V t theprojection on therpist-on "rod. i'ljhefpis JOHN J. THOMPSON, ton rod isthen actuateduntil limitedgby I; G. :ARN'oLnc j i l T Copiesofthislpatent may lie-obtained for five cents each, by addressing theCommissioner of-Patents, K was liingtomnc. l l

